AGV and safety control system thereof

Abstract

The invention discloses a safety control system of an AGV. The system comprises a vehicle collision sensor which emits a collision signal the moment that a vehicle collision motion is detected; a sudden stop unlocking device which outputs an unlocking signal according to a received instruction to stop a vehicle sudden stop state; and a sudden stop control circuit which maintains output of the sudden stop signal after that the collision signal is received and stops response to change of subsequent collision signals unless the unlocking signal is input. The safety control system can prevent theAGV from repeated start / stop due to input fluctuation of the collision signal caused by vibration after collision, and the safety control system of the AGV is more reliable and more stable.

Description

technical field [0001] The invention relates to the technical field of mobile robots, in particular to an AGV safety control system and an AGV trolley. Background technique [0002] AGV (Automatic Guided Vehicle), that is, automatic guided vehicle, is a material handling equipment. It is a fully automatic transportation device that can automatically load goods at one location, automatically walk to another location, and automatically complete the unloading of goods. Like other automation equipment, safety device is one of its most important components. In a modern production environment, people and various mechanical facilities are in the same environment. AGV, as an action function machine in motion, has a particularly important safety guarantee function. The function of the safety device includes preventing errors in the operation of the equipment, and also preventing the impact of the operation errors on the personnel and its operating environment. Protect the safety of...

AI Technical Summary

Problems solved by technology

The collision detection circuit scheme has the characteristics of simple logic and concise circuit, but all logic must rely on MCU, and MCU, as an integrated semiconductor device, has a high probability of abnormality

And when the MCU is in an abnormal state, the input of the collision signal will not be able to control the output of the emergency stop signal in time

Moreover, when the MCU controls the output of the emergency stop signal, an abnormal reset occurs, and the output of the emergency stop signal is prone to fluctuations, resulting in repeated start and stop actions of the AGV car, which can easily cause secondary accidents and damage. In the working environment of this kind of collision detection circuit, the reliability and stability of the safety control device composed of such collision detection circuits will be difficult to meet the requirements

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